Stopped over by the parking garage about 10 minutes ago and everyone for the most part is on a lunch break. A few guys were working with the bat signal (had it turned over) and one guy was working on a "fake" street light that was on top of the roof. There was more activity on the street with cones being set up and security guards watching the parking spots so no one would park there. I spoke to a security guard for the building directly south of the garage and she mentioned that she'd be coming back tonight because, according to her, "they were going to be filming" in her building. Probed a little more and it sounded like it's most likely setting up lights. She did think filming would take place tonight but I'm not convinced yet. In garage B, where I was (diagnol to the set), there are now signs posted that read "parking reserved for film crew" on the 9th floor.